Physics – Space Physics
Scientific paper
Apr 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005ysc..conf...21m&link_type=abstract
12th Young Scientists' Conference on Astronomy and Space Physics, held in Kyiv, Ukraine, April 19-23, 2005, Eds.: Simon, A.; Gol
Physics
Space Physics
Scientific paper
Researches of troposphere-stratosphere-ionosphere coupling are based on idea of the strong influence of the long- and short-term solar activity variations on the polar terrestrial climate and the asymmetry in the energy deposition from the magnetosphere into the polar ionospheres. The solar activity variations produce changeable impact on magnetosphere and polar ionosphere in both hemispheres. Results of this impact are (1) differences in the ozone concentrations in the Antarctic and Arctic stratosphere due to different forcing in spring; (2) different planetary wave activity; (3) different gravity wave flux intensity depended on strengths of the weather frontal cyclones activity. The study of upper atmosphere in both hemispheres is necessary to better understand various physical mechanisms responsible for the energy transfer from the Sun into atmosphere and ionosphere as well as reverse flux from troposphere to geospace. A simultaneous consideration of phenomena occurring over both polar regions is very important for understanding of these processes. The solution of the problem of energy exchange between neutral atmosphere and geospace plasma is need in study of industrial EM pollution from Earth surface to geospace. A corresponding work must promote modeling space weather on satellite heights and earthquake prediction using ionosphere parameters changes. A determinative significance of Antarctic Peninsula is caused by following features: (1) Antarctic Peninsula is situated near an extremely cyclonic active region - Drake Passage, (2) only this region in Antarctica is magnetically conjugated to industrial area in Northern hemisphere, and (3) this region contains many Antarctic stations which are good equipped by devices to study weather and climate, ozone layer, ionosphere and magnetic field. Last years weather observations at Vernadsky station show that up to 60 atmospheric frontal cyclones (with pressure variation more 20 millibars) swept over Antarctic Peninsula during year. Therefore this region is the most appropriate to study ionosphere impact of troposphere induced AGW. These features produced the scientific goal of the project APTIC. It is to explore the response of the ionosphere to strong weather systems sweeping the Antarctic Peninsula sector and identify energy transfer mechanisms. Main task of the project consists in research of the energy exchange processes between lower (troposphere) and upper atmosphere and EM impact of weather front (cyclone) on ionosphere over Antarctic Peninsula as well as in conjugate region (east coast of the USA). Multipositional study of the powered atmosphere cyclone fronts on Antarctic Peninsula to ionosphere, magnetosphere and conjugate region using three (and more in future) automatic meteo-mag-receivers (MMR) is a new direction of researches. Main scientific objectives of APTIC project are (1) study of the travelling ionosphere disturbances (TID) within F2-layer hights; (2) study of macroscale atmosphere wavelike processes: tides, planetary waves and their image in ozone layer; (3) study of the impact of troposphere disturbances to ozone layer and ionosphere; (4) search the possible influence of sharp changes and longtime trend in ozone layer to troposphere and climate; (5) study of the spatial-temporal structure of frontal weather systems, their moving velocity and direction; (6) search of the time variations (shift) in the geomagnetic substorm development using long-distance chain (Frei-Palmer-Vernadsky-Rothera); (7) study of the spatial corelation of resonance geomagnetic micropulsation; (8) study of the polarisation structure of geomagnetic micropulsation.
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